Coating composition.



No Drawing.

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a'rns PATENT orrio.

WHITNEY 3. mm, or was .smnor. nnw mnsnr, Assmiron'ro GENERAL To all whomit may concern:

Be it known that I, WHITNEY B. Jonas, a citizen of the United States,residing at Perth Amboy, in the county of Middlesex and State ofNew'Jersey, have invented certain new and useful Improvementsin CoatingCompositions, of which the followingr is a specification.

- presence of such his inventlon relates to varnishes or paintscontaining phenolic condensation The phenolic condensation product re-'ferred to is preferably prepared from pure or commercial grades ofphenol or cresol, or mixtures thereof, in presence of a basiccondensing-agent, and it may be made as described 1n U. S. Patent954,666, patented April 12, 1910, to L. H. Baekeland, or in any otherapproved or known manner, the reaction being, however preferablycarried, at this stage of the process, only to the formation of liquidor pasty condensation products, which are however transformable bysufficient heating into infusible products.

The anilin used may be of ordinary commercial grade, containing invariable proportions toluidin, xylidin and the like. The homologues ofanilin is sometimes advantageous as rendering the composition moreslow-drying, or imparting to it special spreading or penetratingqualities, and I may add them in such proportions as may be desired forparticular uses. Among the suitable cyclic hydrocarbons, commercialgrades of xylene or products containing xylene in preponderatingquantity are preferred for most purposes. Xylene not only cheapens theproduct, but appears to increase the rate of drying.

Varnishes prepared as above are clear Specification of Letters'ratent.

N. Y., A CORPORATION OENEW YORK.

Patented Oct. 10,1916.

Application filed November 5, 1918. SerialNo. 799,385.

solutions having excellent spreading qualities under the rush, beinginthis respect far superior to alcoholic or similar solutlons of thesecondensation products. They dry wlth sufiicient rapidity, and-whenapplied to wood or other porous materials they penetrate to a degreesuflicient to secure close adherence of the film their advantage in thisrespect over alcoholic solutions being strongly marked. Such varnishesare used w1th advantage as vehicles for pigments in the preparation ofpaints. An illustrative composition for a paint is as follows AmericanVermilion", 250 parts by weight ,3 ,7 9 I Fine asbestos 20 Powderedsilica--- 5O f Anilin varnish above described 400 Liquid or pastyphenolic condensation product 50 The mixture may be ground in a paintmill in the usual way, and dries to a hard, tough film in four to fivehours under normal. conditions.

The American Vermilion, which is a variety of lead chromate, retains inthis composition its known inhibitive powers,-preventing the rusting ofiron or steel. It may be replaced wholly or in part by otherrust-inhibiting materials or pigments, as other chromates of lead,chromate. of zinc, powilired micaceous specularhematite, or the Whetherapplied as a clear varnish or as a paint, the film may when thecharacter of the work permits, be subjected to baking at 120-125 0., orat other suitable temperatures, for a s'ufiicient time, say four to fivehours. Under these conditions, the phenolic condensation productundergoes polymerization in the known manner, and the film is renderedvery hard and highly resistant to solvents and heat.

The composition as herein described, and particularly the paintscontaining a rustinhibiting component, are especially adapted for use asa first coating for steel railroad cars or their parts, or for analoguspurposes. Thus applied, they form a substratum over, whichany desireddecorative paint may be applied. It is preferred in not on such cases,whenever practicable to bake or heat thlS priming coaiaf Whetherbaked'protectlve substratum, but it is rendered Y practicable to use for thefinish the cheaper varieties of decorative paints, for the reason thatthey need not.be depended upon fora protective efiect on the metal. Afurther advantage of the anilin-containing compositions is that theirodor is relatively slight and unobjectionable, as compared with that ofalcoholic solutions of the same condensation products, andparticularlyof such condensation roduct's as contain materialproportions 0 uncombined cresol.

Instead of using a liquid or pasty variety of the initial phenoliccondensation product, I may employ the known solid varieties thereof;but I prefer the former, as I have found that varmshes and paintsprepared from them ive better technical effects, dry flat, and allow oflonger and smoother brushing. As is known, these liquid or pastycondensation products usual y contain some free phenol or cresol, whichrenders them more readily or freely soluble in the solvent used.

My invention is not restricted to the proportions or to the joint use ofall of the components included in the illustrative examples above given;nor is it restricted to the described method of compoundin thepaint orvarnish. For example, the ani in may be incorporated with the phenol andformaldehyde, or their equivalents, at any stage of the process, forexample during or before the condensation. For instance, thecondensation whereby the initial, soluble phenolic condensation productis formed may be carried out intpresence of a portion ofthe totalquantity 0 anilin, the remainder, together with the cyclic hydrocarbonif used, being added as a diluent; or the process may be otherwisemodified as desired.

adhere with. unusual tenacity to the I claim 1. A fluid coatingcomposition containing -a henolic condensation roduct transformab e byheat into an in usible body, and a solvent therefor containing anilin.

, 3. A fluid coating composition containing a henolic condensationroduct transformab e by heat into an in usible body, and a solventtherefor containing anilin and a cyclic hydrocarbon.

4. A fluid coating composition containing a phenolic condensation roducttransformable by heat into an in usible body, and a solvent thereforcontaining anilin and a cyclic hydrocarbon, the proportion of anilinbeing at least equal to that of the condensation product. i

5. A fluid coating composition containing a phenolic condensationroduct-transformable by heat into an in usible body, and a solventtherefor xylene.

6. A fluid'coating composition containing a phenolic condensation roducttransformcontaining anilin and able by heat into an in usible body, anda solvent therefor containing anilin and xylene, the proportion ofanilin being at least equal to that of the condensation product.

7. A fluid coating composition containing a phenolic condensationproduct'transformable by heat into an infusible body, anilin, a cyclichydrocarbon, and a rust-inhibiting pigment.

8. A fluid coating composition containing a phenolic condensationproduct transformable by heat into an infusible body, anilin, xylene,and a rust-inhibiting pigment.

9. A fluid coating composition containing a phenolic condensation roducttransformable by heat into an infuslble body, a solvent thereforcontaining anilin,. and a rust-inhibiting pigment.

In testimony whereof I affix my si ature.

